The countries of Africa face a number of economic development challenges, particularly with regard to public health and HIV/AIDS. At Columbia's second annual African Economic Forum, Jeffrey Sachs, director of the Earth Institute, and Stephen Lewis, special envoy for HIV/AIDS in Africa to U.N. Secretary-General Kofi Annan, investigate the public health challenge and others, including the environment, education, investment and trade. Sachs and Lewis also offer practical solutions to some of these daunting problems.

Lisa Anderson

Introduction

Lisa Anderson, dean, School of International and Public Affairs, Columbia University